refs #196 - visualize a constraint distance presentation in case of invalid value.

diff --git a/src/SketchPlugin/SketchPlugin_ConstraintDistance.cpp b/src/SketchPlugin/SketchPlugin_ConstraintDistance.cpp
index 23c8b546c05bfd6df2a3ce56f7fab5b315794a0d..89faf4208935b55f52961b8be9a7534d0663aa1a 100644 (file)
--- a/src/SketchPlugin/SketchPlugin_ConstraintDistance.cpp
+++ b/src/SketchPlugin/SketchPlugin_ConstraintDistance.cpp
@@ -132,7 +132,7 @@ void SketchPlugin_ConstraintDistance::move(double theDeltaX, double theDeltaY)
   aPoint->move(theDeltaX, theDeltaY);
 }
 
-double SketchPlugin_ConstraintDistance::calculateCurrentDistance()
+double SketchPlugin_ConstraintDistance::calculateCurrentDistance() const
 {
   double aDistance = -1.;